Question

find the third angle if remaining angles are 2/3 of a right angle 4/5 of a right angle
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Answer 1

Step-by-step explanation:

$1st$ $angle = \frac{2}{3}×90° = 2×30° = 60°$

$2nd$ $angle = \frac{4}{5}×90°= 4×18° = 72°$

$3rd$ $angle = 180°-(60°+72°) = 180°- 132° = 48°$